Tyre size calculator

255
30
21

Equivalent sizes for the 255/30 R21 tyre

Sidewall height 77 mmDiameter 686 mm Circumference 2156 mmRevolutions/km 464

Approved rim widths according to ETRTO: 9" – 8,5" – 9,5"

To be approved, a tyre's diameter may differ by no more than 2 %. The vehicle's load and speed indices must also be respected.

Tyre size equivalents

20″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
275/30 R20 -1.92 % 98.1 km/h 9,5" – 9" – 10"
HankookNexenContinental 16 models in stockFrom CHF 174.00 Summer8 Winter5 All-season3
285/30 R20 -1.07 % 98.9 km/h 10" – 9,5" – 10,5"
VredesteinContinentalMichelin 3 models in stockFrom CHF 225.00 Summer1 Winter2
245/35 R20 -1.00 % 99.0 km/h 8,5" – 8" – 9" – 9,5"
TracmaxHankookLandspider 29 models in stockFrom CHF 81.90 Summer14 Winter6 All-season9
255/35 R20 +0.04 % 100.0 km/h 9" – 8,5" – 9,5" – 10"
TracmaxPirelliVredestein 25 models in stockFrom CHF 81.90 Summer10 Winter9 All-season6
265/35 R20 +1.04 % 101.0 km/h 9,5" – 9" – 10" – 10,5"
PirelliKumhoNexen 18 models in stockFrom CHF 177.00 Summer11 Winter7

21″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
245/30 R21 -0.85 % 99.2 km/h 8,5" – 8" – 9" —
255/30 R21 Your size 0 % 100.0 km/h 9" – 8,5" – 9,5"
Goodyear 1 model in stockFrom CHF 327.00 Summer1
265/30 R21 +0.89 % 100.9 km/h 9,5" – 9" – 10" —

22″

Size Difference Actual speed at 100 km/h on the speedometer ETRTO rims Tyres in stock
235/30 R22 +1.96 % 102.0 km/h 8,5" —

Sizes equivalent to 255/30 R21:

275/30 R20285/30 R20245/35 R20255/35 R20265/35 R20245/30 R21265/30 R21235/30 R22

255/30 R21 tyres in stock

View all 1 255/30 R21 tyres ›
Goodyear Eagle F1 SuperSportSummer tyresGoodyearEagle F1 SuperSport 93YFrom CHF 327.00
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This information is provided for guidance only and does not engage Rupteur's liability in any way.